Operation
The slope is the deciding parameter for measurements in 2‐color mode! The emissivity affects only measurements in 1‐color mode.
For information on determining an unknown slope, and for sample slopes, refer to section 11.3 Typical Slopes, p. 56.
To change the unit’s slope setting, complete the following:
1.Make sure the 2C LED is lit.
2.Press the Mode button until the Є LED is lit. The current slope value shows on the display.
3. Press the c or d button to change the value.
4.Press the Mode button several times until the C or F LED is lit. The displayed temperature will now be based on the new slope value.
6.2.42C/1C Switch
To switch between 2‐color and 1‐color temperature measurement push the 2C/1C selector button. A lit LED indicates the active measurement method. Switching affects the LED display and analog out but not the RS485 out.
6.2.5 Peak Hold (PKH)
With Peak Hold, the respective last peak value is held for the duration of Hold Time. To set and activate Peak Hold, do the following:
1.Press the Mode button until the PKH LED is lit.
2.Press thec button to both set and activate. The display reads in 0.1 seconds. Set Peak Hold from 0.1 to 299.9 seconds. If Peak Hold is set to 300.0 seconds, a hardware reset is needed to trigger another reading. If Peak Hold is set to 0.0 seconds, the function is deactivated.
3.Press the Mode button until the C or F LED is lit. If Peak Hold has been activated, the Peak LED will stay lit.
Once Peak Hold is set above 0, it automatically activates. The output signal remains the same until one of two things happens:
•The peak hold time runs out. In this case, the signal reverts to actual temperature.
•The actual temperature goes above the hold temperature. In this case, starts holding new peak.
Note that other hold functions (like Valley Hold or Averaging) cannot be used concurrently. By means of the software other hold functions are adjustable (e.g. Advanced Peak Hold).
6.2.6 Averaging (AVG)
Averaging can be useful when an average temperature over a specific duration is desired, or when a smoothing of fluctuating temperatures is required.
The averaging algorithm simulates a first order low pass RC filter whose time constant can be adjusted to match the user’s averaging needs. The following figure illustrates an averaging output signal.
28 | Marathon Series FA/FR |
